allery5, 10, 15, 20 ബിൽഡ് 6, 11, 21, 36, 56 എന്നിവയുടെ വിടവുകൾ. അടുത്ത നമ്പർ ഏതാണ്?
A76
B86
C81
D80
Answer & Solution
Correct answer: C. 81
വിടവുകൾ 5, 10, 15, 20 എന്നിവയാണ്, അതിനാൽ അടുത്ത വിടവ് 25 ഉം 56 + 25 = 81 ഉം ആണ്.
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